1 /*
2 * snprintf.c - a portable implementation of snprintf and vsnprintf
3 *
4 */
5 /*
6 * Portions Copyright (C) 2000-2019 The Xastir Group
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 */
22
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif // HAVE_CONFIG_H
26
27 #include "snprintf.h"
28
29
30 /*
31 * Copyright Patrick Powell 1995
32 * This code is based on code written by Patrick Powell (papowell@astart.com)
33 * It may be used for any purpose as long as this notice remains intact
34 * on all source code distributions
35 */
36
37 /**************************************************************
38 * Original:
39 * Patrick Powell Tue Apr 11 09:48:21 PDT 1995
40 * A bombproof version of doprnt (dopr) included.
41 * Sigh. This sort of thing is always nasty do deal with. Note that
42 * the version here does not include floating point...
43 *
44 * snprintf() is used instead of sprintf() as it does limit checks
45 * for string length. This covers a nasty loophole.
46 *
47 * The other functions are there to prevent NULL pointers from
48 * causing nast effects.
49 *
50 * More Recently:
51 * Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43
52 * This was ugly. It is still ugly. I opted out of floating point
53 * numbers, but the formatter understands just about everything
54 * from the normal C string format, at least as far as I can tell from
55 * the Solaris 2.5 printf(3S) man page.
56 *
57 * Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1
58 * Ok, added some minimal floating point support, which means this
59 * probably requires libm on most operating systems. Don't yet
60 * support the exponent (e,E) and sigfig (g,G). Also, fmtint()
61 * was pretty badly broken, it just wasn't being exercised in ways
62 * which showed it, so that's been fixed. Also, formated the code
63 * to mutt conventions, and removed dead code left over from the
64 * original. Also, there is now a builtin-test, just compile with:
65 * gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm
66 * and run snprintf for results.
67 *
68 * Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i
69 * The PGP code was using unsigned hexadecimal formats.
70 * Unfortunately, unsigned formats simply didn't work.
71 *
72 * Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8
73 * The original code assumed that both snprintf() and vsnprintf() were
74 * missing. Some systems only have snprintf() but not vsnprintf(), so
75 * the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF.
76 *
77 * Andrew Tridgell (tridge@samba.org) Oct 1998
78 * fixed handling of %.0f
79 * added test for HAVE_LONG_DOUBLE
80 *
81 *
82 **************************************************************/
83
84 #include <string.h>
85 #include <ctype.h>
86 #include <sys/types.h>
87
88 #ifndef HAVE_VSNPRINTF
89
90 /* varargs declarations: */
91
92 #if defined(__STDC__)
93 #ifdef HAVE_STDARG_H
94 #include <stdarg.h>
95 #else // HAVE_STDARG_H
96 #ifdef HAVE_STD_ARGS_H
97 #include <std_args.h>
98 #endif // HAVE_STD_ARGS_H
99 #endif // HAVE_STDARG_H
100 #include <stdarg.h>
101 #define HAVE_STDARGS /* let's hope that works everywhere (mj) */
102 #define VA_LOCAL_DECL va_list ap
103 #define VA_START(f) va_start(ap, f)
104 #define VA_SHIFT(v,t); /* no-op for ANSI */
105 #define VA_END va_end(ap)
106 #else // __STDC__
107 #include <varargs.h>
108 #undef HAVE_STDARGS
109 #define VA_LOCAL_DECL va_list ap
110 #define VA_START(f) va_start(ap) /* f is ignored! */
111 #define VA_SHIFT(v,t) v = va_arg(ap,t)
112 #define VA_END va_end(ap)
113 #endif // __STDC__
114
115
116 // Must be last include file
117 #include "leak_detection.h"
118
119
120
121 #ifdef HAVE_LONG_DOUBLE
122 #define LDOUBLE long double
123 #else // HAVE_LONG_DOUBLE
124 #define LDOUBLE double
125 #endif // HAVE_LONG_DOUBLE
126
127 static void dopr(char *buffer, size_t maxlen, const char *format, va_list args);
128 static void fmtstr(char *buffer, size_t * currlen, size_t maxlen, char *value,
129 int flags, int min, int max);
130 static void fmtint(char *buffer, size_t * currlen, size_t maxlen, long value,
131 int base, int min, int max, int flags);
132 static void fmtfp(char *buffer, size_t * currlen, size_t maxlen,
133 LDOUBLE fvalue, int min, int max, int flags);
134 static void dopr_outch(char *buffer, size_t * currlen, size_t maxlen, char c);
135
136 /*
137 * dopr(): poor man's version of doprintf
138 */
139
140 /* format read states */
141 #define DP_S_DEFAULT 0
142 #define DP_S_FLAGS 1
143 #define DP_S_MIN 2
144 #define DP_S_DOT 3
145 #define DP_S_MAX 4
146 #define DP_S_MOD 5
147 #define DP_S_CONV 6
148 #define DP_S_DONE 7
149
150 /* format flags - Bits */
151 #define DP_F_MINUS (1 << 0)
152 #define DP_F_PLUS (1 << 1)
153 #define DP_F_SPACE (1 << 2)
154 #define DP_F_NUM (1 << 3)
155 #define DP_F_ZERO (1 << 4)
156 #define DP_F_UP (1 << 5)
157 #define DP_F_UNSIGNED (1 << 6)
158
159 /* Conversion Flags */
160 #define DP_C_SHORT 1
161 #define DP_C_LONG 2
162 #define DP_C_LDOUBLE 3
163
164 #define char_to_int(p) (p - '0')
165 #define MAX(p, q) ((p >= q) ? p : q)
166
dopr(char * buffer,size_t maxlen,const char * format,va_list args)167 static void dopr(char *buffer, size_t maxlen, const char *format, va_list args)
168 {
169 char ch;
170 long value;
171 LDOUBLE fvalue;
172 char *strvalue;
173 int min;
174 int max;
175 int state;
176 int flags;
177 int cflags;
178 size_t currlen;
179
180 state = DP_S_DEFAULT;
181 currlen = flags = cflags = min = 0;
182 max = -1;
183 ch = *format++;
184
185 while (state != DP_S_DONE)
186 {
187 if ((ch == '\0') || (currlen >= maxlen))
188 {
189 state = DP_S_DONE;
190 }
191
192 switch (state)
193 {
194 case DP_S_DEFAULT:
195 if (ch == '%')
196 {
197 state = DP_S_FLAGS;
198 }
199 else
200 {
201 dopr_outch(buffer, &currlen, maxlen, ch);
202 }
203
204 ch = *format++;
205 break;
206 case DP_S_FLAGS:
207 switch (ch)
208 {
209 case '-':
210 flags |= DP_F_MINUS;
211 ch = *format++;
212 break;
213 case '+':
214 flags |= DP_F_PLUS;
215 ch = *format++;
216 break;
217 case ' ':
218 flags |= DP_F_SPACE;
219 ch = *format++;
220 break;
221 case '#':
222 flags |= DP_F_NUM;
223 ch = *format++;
224 break;
225 case '0':
226 flags |= DP_F_ZERO;
227 ch = *format++;
228 break;
229 default:
230 state = DP_S_MIN;
231 break;
232 }
233 break;
234 case DP_S_MIN:
235 if (isdigit(ch))
236 {
237 min = 10 * min + char_to_int(ch);
238 ch = *format++;
239 }
240 else if (ch == '*')
241 {
242 min = va_arg(args, int);
243 ch = *format++;
244 state = DP_S_DOT;
245 }
246 else
247 {
248 state = DP_S_DOT;
249 }
250
251 break;
252 case DP_S_DOT:
253 if (ch == '.')
254 {
255 state = DP_S_MAX;
256 ch = *format++;
257 }
258 else
259 {
260 state = DP_S_MOD;
261 }
262
263 break;
264 case DP_S_MAX:
265 if (isdigit(ch))
266 {
267 if (max < 0)
268 {
269 max = 0;
270 }
271
272 max = 10 * max + char_to_int(ch);
273 ch = *format++;
274 }
275 else if (ch == '*')
276 {
277 max = va_arg(args, int);
278 ch = *format++;
279 state = DP_S_MOD;
280 }
281 else
282 {
283 state = DP_S_MOD;
284 }
285
286 break;
287 case DP_S_MOD:
288 /* Currently, we don't support Long Long, bummer */
289 switch (ch)
290 {
291 case 'h':
292 cflags = DP_C_SHORT;
293 ch = *format++;
294 break;
295 case 'l':
296 cflags = DP_C_LONG;
297 ch = *format++;
298 break;
299 case 'L':
300 cflags = DP_C_LDOUBLE;
301 ch = *format++;
302 break;
303 default:
304 break;
305 }
306 state = DP_S_CONV;
307 break;
308 case DP_S_CONV:
309 switch (ch)
310 {
311 case 'd':
312 case 'i':
313 if (cflags == DP_C_SHORT)
314 {
315 value = va_arg(args, short int);
316 }
317 else if (cflags == DP_C_LONG)
318 {
319 value = va_arg(args, long int);
320 }
321 else
322 {
323 value = va_arg(args, int);
324 }
325
326 fmtint(buffer, &currlen, maxlen, value, 10, min, max, flags);
327 break;
328 case 'o':
329 flags |= DP_F_UNSIGNED;
330 if (cflags == DP_C_SHORT)
331 {
332 value = va_arg(args, unsigned short int);
333 }
334 else if (cflags == DP_C_LONG)
335 {
336 value = va_arg(args, unsigned long int);
337 }
338 else
339 {
340 value = va_arg(args, unsigned int);
341 }
342
343 fmtint(buffer, &currlen, maxlen, value, 8, min, max, flags);
344 break;
345 case 'u':
346 flags |= DP_F_UNSIGNED;
347 if (cflags == DP_C_SHORT)
348 {
349 value = va_arg(args, unsigned short int);
350 }
351 else if (cflags == DP_C_LONG)
352 {
353 value = va_arg(args, unsigned long int);
354 }
355 else
356 {
357 value = va_arg(args, unsigned int);
358 }
359
360 fmtint(buffer, &currlen, maxlen, value, 10, min, max, flags);
361 break;
362 case 'X':
363 flags |= DP_F_UP;
364 case 'x':
365 flags |= DP_F_UNSIGNED;
366 if (cflags == DP_C_SHORT)
367 {
368 value = va_arg(args, unsigned short int);
369 }
370 else if (cflags == DP_C_LONG)
371 {
372 value = va_arg(args, unsigned long int);
373 }
374 else
375 {
376 value = va_arg(args, unsigned int);
377 }
378
379 fmtint(buffer, &currlen, maxlen, value, 16, min, max, flags);
380 break;
381 case 'f':
382 if (cflags == DP_C_LDOUBLE)
383 {
384 fvalue = va_arg(args, LDOUBLE);
385 }
386 else
387 {
388 fvalue = va_arg(args, double);
389 }
390
391 /* um, floating point? */
392 fmtfp(buffer, &currlen, maxlen, fvalue, min, max, flags);
393 break;
394 case 'E':
395 flags |= DP_F_UP;
396 case 'e':
397 if (cflags == DP_C_LDOUBLE)
398 {
399 fvalue = va_arg(args, LDOUBLE);
400 }
401 else
402 {
403 fvalue = va_arg(args, double);
404 }
405 break;
406 case 'G':
407 flags |= DP_F_UP;
408 case 'g':
409 if (cflags == DP_C_LDOUBLE)
410 {
411 fvalue = va_arg(args, LDOUBLE);
412 }
413 else
414 {
415 fvalue = va_arg(args, double);
416 }
417
418 break;
419 case 'c':
420 dopr_outch(buffer, &currlen, maxlen, va_arg(args, int));
421 break;
422 case 's':
423 strvalue = va_arg(args, char *);
424 if (max < 0)
425 {
426 max = maxlen; /* ie, no max */
427 }
428
429 fmtstr(buffer, &currlen, maxlen, strvalue, flags, min, max);
430 break;
431 case 'p':
432 strvalue = va_arg(args, void *);
433 fmtint(buffer, &currlen, maxlen, (long) strvalue, 16, min,
434 max, flags);
435 break;
436 case 'n':
437 if (cflags == DP_C_SHORT)
438 {
439 short int *num;
440 num = va_arg(args, short int *);
441 *num = currlen;
442 }
443 else if (cflags == DP_C_LONG)
444 {
445 long int *num;
446 num = va_arg(args, long int *);
447 *num = currlen;
448 }
449 else
450 {
451 int *num;
452 num = va_arg(args, int *);
453 *num = currlen;
454 }
455 break;
456 case '%':
457 dopr_outch(buffer, &currlen, maxlen, ch);
458 break;
459 case 'w':
460 /* not supported yet, treat as next char */
461 ch = *format++;
462 break;
463 default:
464 /* Unknown, skip */
465 break;
466 }
467 ch = *format++;
468 state = DP_S_DEFAULT;
469 flags = cflags = min = 0;
470 max = -1;
471 break;
472 case DP_S_DONE:
473 break;
474 default:
475 /* hmm? */
476 break; /* some picky compilers need this */
477 }
478 }
479 if (currlen < maxlen - 1)
480 {
481 buffer[currlen] = '\0';
482 }
483 else
484 {
485 buffer[maxlen - 1] = '\0';
486 }
487 }
488
fmtstr(char * buffer,size_t * currlen,size_t maxlen,char * value,int flags,int min,int max)489 static void fmtstr(char *buffer, size_t * currlen, size_t maxlen,
490 char *value, int flags, int min, int max)
491 {
492 int padlen, strln; /* amount to pad */
493 int cnt = 0;
494
495 if (value == 0)
496 {
497 value = "<NULL>";
498 }
499
500 for (strln = 0; value[strln]; ++strln); /* strlen */
501 padlen = min - strln;
502 if (padlen < 0)
503 {
504 padlen = 0;
505 }
506
507 if (flags & DP_F_MINUS)
508 {
509 padlen = -padlen; /* Left Justify */
510 }
511
512 while ((padlen > 0) && (cnt < max))
513 {
514 dopr_outch(buffer, currlen, maxlen, ' ');
515 --padlen;
516 ++cnt;
517 }
518
519 while (*value && (cnt < max))
520 {
521 dopr_outch(buffer, currlen, maxlen, *value++);
522 ++cnt;
523 }
524
525 while ((padlen < 0) && (cnt < max))
526 {
527 dopr_outch(buffer, currlen, maxlen, ' ');
528 ++padlen;
529 ++cnt;
530 }
531 }
532
533 /* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
534
fmtint(char * buffer,size_t * currlen,size_t maxlen,long value,int base,int min,int max,int flags)535 static void fmtint(char *buffer, size_t * currlen, size_t maxlen,
536 long value, int base, int min, int max, int flags)
537 {
538 int signvalue = 0;
539 unsigned long uvalue;
540 char convert[20];
541 int place = 0;
542 int spadlen = 0; /* amount to space pad */
543 int zpadlen = 0; /* amount to zero pad */
544 int caps = 0;
545
546 if (max < 0)
547 {
548 max = 0;
549 }
550
551 uvalue = value;
552
553 if (!(flags & DP_F_UNSIGNED))
554 {
555 if (value < 0)
556 {
557 signvalue = '-';
558 uvalue = -value;
559 }
560 else if (flags & DP_F_PLUS) /* Do a sign (+/i) */
561 {
562 signvalue = '+';
563 }
564 else if (flags & DP_F_SPACE)
565 {
566 signvalue = ' ';
567 }
568 }
569
570 if (flags & DP_F_UP)
571 {
572 caps = 1; /* Should characters be upper case? */
573 }
574
575 do
576 {
577 convert[place++] = (caps ? "0123456789ABCDEF" : "0123456789abcdef")
578 [uvalue % (unsigned) base];
579
580 uvalue = (uvalue / (unsigned) base);
581 }
582
583 while (uvalue && (place < 20));
584 if (place == 20)
585 {
586 place--;
587 }
588
589 convert[place] = 0;
590
591 zpadlen = max - place;
592 spadlen = min - MAX(max, place) - (signvalue ? 1 : 0);
593
594 if (zpadlen < 0)
595 {
596 zpadlen = 0;
597 }
598
599 if (spadlen < 0)
600 {
601 spadlen = 0;
602 }
603
604 if (flags & DP_F_ZERO)
605 {
606 zpadlen = MAX(zpadlen, spadlen);
607 spadlen = 0;
608 }
609
610 if (flags & DP_F_MINUS)
611 {
612 spadlen = -spadlen; /* Left Justifty */
613 }
614
615 #ifdef DEBUG_SNPRINTF
616 dprint(1, (debugfile, "zpad: %d, spad: %d, min: %d, max: %d, place: %d\n",
617 zpadlen, spadlen, min, max, place));
618 #endif // DEBUG_SNPRINTF
619
620 /* Spaces */
621 while (spadlen > 0)
622 {
623 dopr_outch(buffer, currlen, maxlen, ' ');
624 --spadlen;
625 }
626
627 /* Sign */
628 if (signvalue)
629 {
630 dopr_outch(buffer, currlen, maxlen, signvalue);
631 }
632
633 /* Zeros */
634 if (zpadlen > 0)
635 {
636 while (zpadlen > 0)
637 {
638 dopr_outch(buffer, currlen, maxlen, '0');
639 --zpadlen;
640 }
641 }
642
643 /* Digits */
644 while (place > 0)
645 {
646 dopr_outch(buffer, currlen, maxlen, convert[--place]);
647 }
648
649 /* Left Justified spaces */
650 while (spadlen < 0)
651 {
652 dopr_outch(buffer, currlen, maxlen, ' ');
653 ++spadlen;
654 }
655 }
656
abs_val(LDOUBLE value)657 static LDOUBLE abs_val(LDOUBLE value)
658 {
659 LDOUBLE result = value;
660
661 if (value < 0)
662 {
663 result = -value;
664 }
665
666 return result;
667 }
668
pow10(int exp)669 static LDOUBLE pow10(int exp)
670 {
671 LDOUBLE result = 1;
672
673 while (exp)
674 {
675 result *= 10;
676 exp--;
677 }
678
679 return result;
680 }
681
round(LDOUBLE value)682 static long round(LDOUBLE value)
683 {
684 long intpart;
685
686 intpart = value;
687 value = value - intpart;
688 if (value >= 0.5)
689 {
690 intpart++;
691 }
692
693 return intpart;
694 }
695
fmtfp(char * buffer,size_t * currlen,size_t maxlen,LDOUBLE fvalue,int min,int max,int flags)696 static void fmtfp(char *buffer, size_t * currlen, size_t maxlen,
697 LDOUBLE fvalue, int min, int max, int flags)
698 {
699 int signvalue = 0;
700 LDOUBLE ufvalue;
701 char iconvert[20];
702 char fconvert[20];
703 int iplace = 0;
704 int fplace = 0;
705 int padlen = 0; /* amount to pad */
706 int zpadlen = 0;
707 int caps = 0;
708 long intpart;
709 long fracpart;
710
711 /*
712 * AIX manpage says the default is 0, but Solaris says the default
713 * is 6, and sprintf on AIX defaults to 6
714 */
715 if (max < 0)
716 {
717 max = 6;
718 }
719
720 ufvalue = abs_val(fvalue);
721
722 if (fvalue < 0)
723 {
724 signvalue = '-';
725 }
726 else if (flags & DP_F_PLUS) /* Do a sign (+/i) */
727 {
728 signvalue = '+';
729 }
730 else if (flags & DP_F_SPACE)
731 {
732 signvalue = ' ';
733 }
734
735 #if 0
736 if (flags & DP_F_UP)
737 {
738 caps = 1; /* Should characters be upper case? */
739 }
740 #endif // 0
741
742 intpart = ufvalue;
743
744 /*
745 * Sorry, we only support 9 digits past the decimal because of our
746 * conversion method
747 */
748 if (max > 9)
749 {
750 max = 9;
751 }
752
753 /* We "cheat" by converting the fractional part to integer by
754 * multiplying by a factor of 10
755 */
756 fracpart = round((pow10(max)) * (ufvalue - intpart));
757
758 if (fracpart >= pow10(max))
759 {
760 intpart++;
761 fracpart -= pow10(max);
762 }
763
764 /* Convert integer part */
765 do
766 {
767 iconvert[iplace++] = (caps ? "0123456789ABCDEF" : "0123456789abcdef")[intpart % 10];
768 intpart = (intpart / 10);
769 }
770 while (intpart && (iplace < 20));
771
772 if (iplace == 20)
773 {
774 iplace--;
775 }
776
777 iconvert[iplace] = 0;
778
779 /* Convert fractional part */
780 do
781 {
782 fconvert[fplace++] = (caps ? "0123456789ABCDEF" : "0123456789abcdef")[fracpart % 10];
783 fracpart = (fracpart / 10);
784 }
785 while (fracpart && (fplace < 20));
786
787 if (fplace == 20)
788 {
789 fplace--;
790 }
791
792 fconvert[fplace] = 0;
793
794 /* -1 for decimal point, another -1 if we are printing a sign */
795 padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
796 zpadlen = max - fplace;
797
798 if (zpadlen < 0)
799 {
800 zpadlen = 0;
801 }
802
803 if (padlen < 0)
804 {
805 padlen = 0;
806 }
807
808 if (flags & DP_F_MINUS)
809 {
810 padlen = -padlen; /* Left Justifty */
811 }
812
813 if ((flags & DP_F_ZERO) && (padlen > 0))
814 {
815 if (signvalue)
816 {
817 dopr_outch(buffer, currlen, maxlen, signvalue);
818 --padlen;
819 signvalue = 0;
820 }
821 while (padlen > 0)
822 {
823 dopr_outch(buffer, currlen, maxlen, '0');
824 --padlen;
825 }
826 }
827
828 while (padlen > 0)
829 {
830 dopr_outch(buffer, currlen, maxlen, ' ');
831 --padlen;
832 }
833
834 if (signvalue)
835 {
836 dopr_outch(buffer, currlen, maxlen, signvalue);
837 }
838
839 while (iplace > 0)
840 {
841 dopr_outch(buffer, currlen, maxlen, iconvert[--iplace]);
842 }
843
844 /*
845 * Decimal point. This should probably use locale to find the correct
846 * char to print out.
847 */
848 if (max > 0)
849 {
850 dopr_outch(buffer, currlen, maxlen, '.');
851
852 while (fplace > 0)
853 {
854 dopr_outch(buffer, currlen, maxlen, fconvert[--fplace]);
855 }
856 }
857
858 while (zpadlen > 0)
859 {
860 dopr_outch(buffer, currlen, maxlen, '0');
861 --zpadlen;
862 }
863
864 while (padlen < 0)
865 {
866 dopr_outch(buffer, currlen, maxlen, ' ');
867 ++padlen;
868 }
869 }
870
dopr_outch(char * buffer,size_t * currlen,size_t maxlen,char c)871 static void dopr_outch(char *buffer, size_t * currlen, size_t maxlen, char c)
872 {
873 if (*currlen < maxlen)
874 {
875 buffer[(*currlen)++] = c;
876 }
877 }
878
xastir_vsnprintf(char * str,size_t count,const char * fmt,va_list args)879 int xastir_vsnprintf(char *str, size_t count, const char *fmt, va_list args)
880 {
881 str[0] = 0;
882 dopr(str, count, fmt, args);
883 return (strlen(str));
884 }
885 #endif /* !HAVE_VSNPRINTF */
886
887 #ifndef HAVE_SNPRINTF
888 #ifdef HAVE_STDARGS
xastir_snprintf(char * str,size_t count,const char * fmt,...)889 int xastir_snprintf(char *str, size_t count, const char *fmt, ...)
890 #else // HAVE_STDARGS
891 int xastir_snprintf(va_alist) va_dcl
892 #endif // HAVE_STDARGS
893 {
894 # ifndef HAVE_STDARGS
895 char *str;
896 size_t count;
897 char *fmt;
898 # endif // HAVE_STDARGS
899 VA_LOCAL_DECL;
900
901 VA_START(fmt);
902 VA_SHIFT(str, char *);
903 VA_SHIFT(count, size_t);
904 VA_SHIFT(fmt, char *);
905 (void) xastir_vsnprintf(str, count, fmt, ap);
906 VA_END;
907 return (strlen(str));
908 }
909 #endif /* !HAVE_SNPRINTF */
910
911
912